#23454: TypeError: int() argument must be a string or a number, not 'User'
-----------------------------+--------------------------------------
Reporter: acooley2006 | Owner: nobody
Type: Bug | Status: new
Component: Migrations | Version: 1.7
Severity: Normal | Resolution:
Keywords: | Triage Stage: Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 1 | UI/UX: 0
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Changes (by fupduck):
* status: closed => new
* resolution: invalid =>
Comment:
Hello,
this error message comes up when a default user is assigned to a new
foreign key field.
Excerpt of the attached project where manage.py migrate is failing:
{{{
from django.db import models
from django.contrib.auth.models import User
def get_default_user():
return User.objects.get(id=1)
class Question(models.Model):
the_user = models.ForeignKey(User, default=get_default_user)
}}}
Then manage.py makemigrations leads to a new migration 0003 with:
{{{
migrations.AddField(
model_name='question',
name='the_user',
field=models.ForeignKey(default=polls.models.get_default_user,
to=settings.AUTH_USER_MODEL),
),
}}}
And then manage.py sqlmigrate polls 0003 is enough to get the error
message:
{{{
File "/usr/lib/python2.7/dist-
packages/django/db/models/fields/__init__.py", line 985, in get_prep_value
return int(value)
TypeError: int() argument must be a string or a number, not 'User'
}}}
A workaround is directly assining the .id of the wanted user to the
default parameter, but I think it would be better if int(user_instance)
would either return the id as int or directly user_instance.id is used by
get_prep_value.
Regards
Link to example project to reproduce the code (tar.gz):
[https://slack-files.com/T031HCE60-F0FBKUE87-a1a23a53f7]
--
Ticket URL: <https://code.djangoproject.com/ticket/23454#comment:3>
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